PATH LOSS EXTRACTION OF 2.4GHZ WLAN RADIO WAVES IN VARIOUS MULTI-FLOOR BUILDINGS ACCORDING TO SEIDEL’S MODEL

Abstract

The 2.4GHz WLAN radio wave received signal strength is proportional to log distance of the transmitter and receiver. The signal strength is characterised using well-known Seidel’s path loss model. The characterisation is made by extracting the path loss exponent, floor attenuation factor, and standard deviation of the signal. This paper presents characterisation of the WLAN signal in different types and heights of multi floor buildings which is important for indoor localisation application. The model shows good agreement with the measured signal strength in all tested buildings. The results of path loss exponent of 1.8 to 3.6 reflect the richness of the multipath environment within the buildings. The floor attenuation factor decreases according to the open-space between floor structures. The low value of standard deviation between 4.6 to 6.6 shows good fit of the model to the measured signal.